Montrose Weather Records (USC00395733)

Record envelope, standing records and threshold days for Montrose (USC00395733), South Dakota, United States, with 64 years of record.

Key Facts for Montrose

Montrose (USC00395733) is a weather station in South Dakota, United States at 43.70 latitude and -97.18 longitude, 451 m (1,481 ft) above sea level.
The station reports from 1963 to 2026, 64 years of record.
1,464 records set at Montrose still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Montrose set a daily record precipitation of 31.8 mm (1.3 in) on 21 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: South Dakota, United States, 43.70 latitude, -97.18 longitude.
Elevation: 451 m (1,481 ft).
Period of record: 1963 to 2026, 64 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Montrose. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Montrose, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	10.6 C (51.1 F)	-38.9 C (-38.0 F)	n/a	n/a
Feb	12.8 C (55.0 F)	-37.2 C (-35.0 F)	n/a	n/a
Mar	29.4 C (84.9 F)	-26.7 C (-16.1 F)	n/a	n/a
Apr	33.3 C (91.9 F)	-11.1 C (12.0 F)	n/a	n/a
May	37.8 C (100.0 F)	-10.0 C (14.0 F)	n/a	n/a
Jun	36.7 C (98.1 F)	1.1 C (34.0 F)	n/a	n/a
Jul	39.4 C (102.9 F)	1.1 C (34.0 F)	n/a	n/a
Aug	41.1 C (106.0 F)	1.7 C (35.1 F)	n/a	n/a
Sep	38.3 C (100.9 F)	-3.9 C (25.0 F)	n/a	n/a
Oct	33.3 C (91.9 F)	-12.2 C (10.0 F)	n/a	n/a
Nov	21.7 C (71.1 F)	-28.9 C (-20.0 F)	n/a	n/a
Dec	13.9 C (57.0 F)	-32.2 C (-26.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Montrose still stand. 1964 holds the most, with 171.

All-Time Record Progression

2 new records

2 all-time records were set at Montrose between 21 June 2018 and 21 June 2024. Each dot is a new record.

When Montrose set new all-time records
Date	Kind	Detail
2018-06-21	Record daily precipitation	Record daily precipitation 120.1 mm (4.7 in)
2024-06-21	Record daily precipitation	Record daily precipitation 120.7 mm (4.8 in)

Wettest Day of Each Month

Jun: 120.7 mm (4.8 in)

The wettest day on record for each calendar month at Montrose. The most was 120.7 mm (4.8 in) on 21 June 2024.

Record daily precipitation for each month at Montrose
Month	Record daily precipitation (mm)	Date
Jan	76.2 mm (3.0 in)	13 January 2009
Feb	50.8 mm (2.0 in)	27 February 2009
Mar	50.8 mm (2.0 in)	31 March 2007
Apr	93.7 mm (3.7 in)	7 April 2006
May	101.6 mm (4.0 in)	26 May 2013
Jun	120.7 mm (4.8 in)	21 June 2024
Jul	96.8 mm (3.8 in)	13 July 2018
Aug	58.2 mm (2.3 in)	2 August 2006
Sep	101.6 mm (4.0 in)	11 September 2019
Oct	61.0 mm (2.4 in)	6 October 2008
Nov	44.5 mm (1.8 in)	19 November 2024
Dec	50.8 mm (2.0 in)	20 December 1994

Period of Record Coverage

1963 to 1973

11 years of record at Montrose, 1963 to 1973. 3 years have data for under 90 percent of days and are left out of rankings: 1963, 1972, 1973.

Days with data per year at Montrose
Year	Days with data	Share of year	Complete
1963	141	39%	No
1964	363	99%	Yes
1965	355	97%	Yes
1966	358	98%	Yes
1967	345	95%	Yes
1968	349	95%	Yes
1969	329	90%	Yes
1970	339	93%	Yes
1971	345	95%	Yes
1972	324	89%	No
1973	160	44%	No

Latest Records

Latest records at Montrose
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 2026	Montrose, US	daily rain (Provisional)	31.8 mm (1.3 in)	16.1 mm (0.6 in)	8 years	20 of 100 (Routine)
8 September 2026	Montrose, US	daily rain (Provisional)	38.1 mm (1.5 in)	6.3 mm (0.25 in)	20 years	16 of 100 (Routine)
20 August 2026	Montrose, US	daily rain (Provisional)	44.7 mm (1.8 in)	4.1 mm (0.16 in)	8 years	11 of 100 (Routine)
28 June 2026	Montrose, US	daily rain	50.8 mm (2.0 in)	37.3 mm (1.5 in)	1 year	31 of 100 (Routine)
31 May 2026	Montrose, US	daily rain	30.5 mm (1.2 in)	7.6 mm (0.30 in)	29 years	20 of 100 (Routine)
14 December 2025	Montrose, US	daily snow depth	20.3 cm (8.0 in)	2.5 cm (1.0 in)	55 years	24 of 100 (Routine)
13 December 2025	Montrose, US	daily snowfall	7.4 cm (2.9 in)	1.0 cm (0.4 in)	56 years	24 of 100 (Routine)
13 December 2025	Montrose, US	daily snow depth	20.3 cm (8.0 in)	2.5 cm (1.0 in)	55 years	24 of 100 (Routine)
9 December 2025	Montrose, US	daily snow depth	20.3 cm (8.0 in)	5.1 cm (2.0 in)	3 years	11 of 100 (Routine)
8 December 2025	Montrose, US	daily snow depth	22.9 cm (9.0 in)	10.2 cm (4.0 in)	62 years	34 of 100 (Routine)
7 December 2025	Montrose, US	daily snow depth	22.9 cm (9.0 in)	12.7 cm (5.0 in)	54 years	34 of 100 (Routine)
7 December 2025	Montrose, US	daily snowfall	12.7 cm (5.0 in)	11.7 cm (4.6 in)	4 years	29 of 100 (Routine)
7 December 2025	Montrose, US	daily rain	7.9 mm (0.31 in)	6.9 mm (0.27 in)	4 years	16 of 100 (Routine)
6 December 2025	Montrose, US	daily snow depth (Tie)	10.2 cm (4.0 in)	tie	54 years	5 of 100 (Routine)
10 November 2025	Montrose, US	daily snow depth	7.6 cm (3.0 in)	5.1 cm (2.0 in)	12 years	19 of 100 (Routine)
9 November 2025	Montrose, US	daily snow depth	7.6 cm (3.0 in)	2.5 cm (1.0 in)	12 years	14 of 100 (Routine)
8 November 2025	Montrose, US	daily snowfall	6.6 cm (2.6 in)	6.6 cm (2.6 in)	62 years	35 of 100 (Notable)
22 August 2025	Montrose, US	daily rain	15.2 mm (0.6 in)	4.0 mm (0.16 in)	52 years	20 of 100 (Routine)
18 August 2025	Montrose, US	daily rain	30.5 mm (1.2 in)	0.3 mm (0.01 in)	18 years	11 of 100 (Routine)
6 August 2025	Montrose, US	daily rain	25.4 mm (1.0 in)	2.5 mm (0.10 in)	2 years	8 of 100 (Routine)

Extremes by Year

1963 to 2026

Yearly extremes at Montrose: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.1 C (106.0 F)	1973	37.8 C (100.0 F)	11
Coldest night (TNn)	-38.9 C (-38.0 F)	1970	-33.9 C (-29.0 F)	11
Wettest day (Rx1day)	120.7 mm (4.8 in)	2024	52.1 mm (2.1 in)	51
Wettest five days (Rx5day)	190.5 mm (7.5 in)	2024	78.0 mm (3.1 in)	51
Longest dry spell (CDD)	69 days	2014	28 days	51

Hottest day (TXx)

The hottest day of the year at Montrose, 1963 to 2026. The record is 41.1 C (106.0 F) in 1973, marked on the chart; the median year is 37.8 C (100.0 F).

Hottest day (TXx) at Montrose by year
Year	Hottest day (TXx)
1963	33.3 C (91.9 F)
1964	37.8 C (100.0 F)
1965	37.8 C (100.0 F)
1966	39.4 C (102.9 F)
1967	38.9 C (102.0 F)
1968	36.7 C (98.1 F)
1969	35.0 C (95.0 F)
1970	38.3 C (100.9 F)
1971	36.7 C (98.1 F)
1972	36.1 C (97.0 F)
1973	41.1 C (106.0 F)
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Coldest night (TNn)

The coldest night of the year at Montrose, 1963 to 2026. The record is -38.9 C (-38.0 F) in 1970, marked on the chart; the median year is -33.9 C (-29.0 F).

Coldest night (TNn) at Montrose by year
Year	Coldest night (TNn)
1963	-32.2 C (-26.0 F)
1964	-32.2 C (-26.0 F)
1965	-34.4 C (-29.9 F)
1966	-36.7 C (-34.1 F)
1967	-31.1 C (-24.0 F)
1968	-31.7 C (-25.1 F)
1969	-33.9 C (-29.0 F)
1970	-38.9 C (-38.0 F)
1971	-37.2 C (-35.0 F)
1972	-37.8 C (-36.0 F)
1973	-33.3 C (-27.9 F)
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Montrose, 1963 to 2026. The record is 120.7 mm (4.8 in) in 2024, marked on the chart; the median year is 52.1 mm (2.1 in).

Wettest day (Rx1day) at Montrose by year
Year	Wettest day (Rx1day)
1963	57.4 mm (2.3 in)
1964	39.4 mm (1.6 in)
1965	50.8 mm (2.0 in)
1966	34.3 mm (1.4 in)
1967	53.8 mm (2.1 in)
1968	68.1 mm (2.7 in)
1969	63.0 mm (2.5 in)
1970	33.5 mm (1.3 in)
1971	37.1 mm (1.5 in)
1972	74.7 mm (2.9 in)
1973	24.4 mm (1.0 in)
1986	8.1 mm (0.32 in)
1987	38.1 mm (1.5 in)
1988	39.9 mm (1.6 in)
1989	31.5 mm (1.2 in)
1990	31.2 mm (1.2 in)
1991	61.0 mm (2.4 in)
1992	71.1 mm (2.8 in)
1993	53.8 mm (2.1 in)
1994	63.5 mm (2.5 in)
1995	61.0 mm (2.4 in)
1996	48.3 mm (1.9 in)
1997	46.0 mm (1.8 in)
1998	59.7 mm (2.4 in)
1999	27.9 mm (1.1 in)
2000	55.1 mm (2.2 in)
2002	38.1 mm (1.5 in)
2003	112.5 mm (4.4 in)
2004	48.3 mm (1.9 in)
2005	53.3 mm (2.1 in)
2006	93.7 mm (3.7 in)
2007	52.1 mm (2.1 in)
2008	61.0 mm (2.4 in)
2009	76.2 mm (3.0 in)
2010	72.6 mm (2.9 in)
2011	49.5 mm (1.9 in)
2012	36.8 mm (1.4 in)
2013	101.6 mm (4.0 in)
2014	55.1 mm (2.2 in)
2015	71.6 mm (2.8 in)
2016	35.1 mm (1.4 in)
2017	49.8 mm (2.0 in)
2018	120.1 mm (4.7 in)
2019	101.6 mm (4.0 in)
2020	47.8 mm (1.9 in)
2021	47.2 mm (1.9 in)
2022	68.1 mm (2.7 in)
2023	37.6 mm (1.5 in)
2024	120.7 mm (4.8 in)
2025	33.0 mm (1.3 in)
2026	50.8 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Montrose, 1963 to 2026. The record is 190.5 mm (7.5 in) in 2024, marked on the chart; the median year is 78.0 mm (3.1 in).

Wettest five days (Rx5day) at Montrose by year
Year	Wettest five days (Rx5day)
1963	78.0 mm (3.1 in)
1964	48.0 mm (1.9 in)
1965	82.6 mm (3.3 in)
1966	55.4 mm (2.2 in)
1967	64.2 mm (2.5 in)
1968	112.5 mm (4.4 in)
1969	85.4 mm (3.4 in)
1970	51.3 mm (2.0 in)
1971	84.2 mm (3.3 in)
1972	102.6 mm (4.0 in)
1973	51.6 mm (2.0 in)
1986	9.9 mm (0.39 in)
1987	64.3 mm (2.5 in)
1988	73.2 mm (2.9 in)
1989	36.8 mm (1.4 in)
1990	54.4 mm (2.1 in)
1991	136.7 mm (5.4 in)
1992	88.8 mm (3.5 in)
1993	121.3 mm (4.8 in)
1994	87.3 mm (3.4 in)
1995	69.1 mm (2.7 in)
1996	80.3 mm (3.2 in)
1997	54.3 mm (2.1 in)
1998	81.0 mm (3.2 in)
1999	73.1 mm (2.9 in)
2000	72.8 mm (2.9 in)
2002	42.6 mm (1.7 in)
2003	117.1 mm (4.6 in)
2004	67.3 mm (2.6 in)
2005	65.8 mm (2.6 in)
2006	93.7 mm (3.7 in)
2007	82.5 mm (3.2 in)
2008	73.7 mm (2.9 in)
2009	102.9 mm (4.1 in)
2010	104.5 mm (4.1 in)
2011	53.2 mm (2.1 in)
2012	83.1 mm (3.3 in)
2013	124.7 mm (4.9 in)
2014	94.4 mm (3.7 in)
2015	97.0 mm (3.8 in)
2016	63.5 mm (2.5 in)
2017	79.3 mm (3.1 in)
2018	154.4 mm (6.1 in)
2019	154.4 mm (6.1 in)
2020	48.6 mm (1.9 in)
2021	67.7 mm (2.7 in)
2022	98.8 mm (3.9 in)
2023	49.0 mm (1.9 in)
2024	190.5 mm (7.5 in)
2025	71.2 mm (2.8 in)
2026	65.3 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Montrose, 1963 to 2026. The record is 69 days in 2014, marked on the chart; the median year is 28 days.

Longest dry spell (CDD) at Montrose by year
Year	Longest dry spell (CDD)
1963	31 days
1964	60 days
1965	23 days
1966	28 days
1967	43 days
1968	30 days
1969	18 days
1970	23 days
1971	26 days
1972	23 days
1973	20 days
1986	44 days
1987	39 days
1988	34 days
1989	25 days
1990	37 days
1991	48 days
1992	22 days
1993	27 days
1994	25 days
1995	23 days
1996	50 days
1997	26 days
1998	20 days
1999	14 days
2000	33 days
2002	18 days
2003	29 days
2004	25 days
2005	24 days
2006	39 days
2007	43 days
2008	22 days
2009	23 days
2010	25 days
2011	62 days
2012	35 days
2013	28 days
2014	69 days
2015	34 days
2016	30 days
2017	29 days
2018	28 days
2019	21 days
2020	42 days
2021	24 days
2022	26 days
2023	38 days
2024	29 days
2025	24 days
2026	39 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

37 years, 1964 to 2025

A day with at least 54.4 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 157.3 mm (6.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Montrose: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	54.4 mm (2.1 in)
5 years	77.0 mm (3.0 in)
10 years	93.8 mm (3.7 in)
25 years	117.3 mm (4.6 in)
50 years	136.5 mm (5.4 in)	Longer than the 37 years of record
100 years	157.3 mm (6.2 in)	Longer than the 37 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 37 years of values from 1964 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 120.7 mm (4.8 in) in 2024; 120.1 mm (4.7 in) in 2018; 112.5 mm (4.4 in) in 2003.

Download the Data

Data for Montrose standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Montrose threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).